Cellular Phone: Service and Repair

Control Unit Input Test/Replacement

NOTE: Before testing, troubleshoot the multiplex integrated control system using B-CAN System Diagnosis Test Mode A.

1. Remove the roof console.
2. Disconnect the 28P connector (A) from the HandsFreeLink control unit (B).






3. Inspect the connector and socket terminals for a good pinfit to be sure they are all making good contact.

- If the terminals are bent, loose or corroded, repair them as necessary, and recheck the system.
- If the terminals look OK, go to step 4.

4. With the connector still disconnected, make these input tests at the connector.

- If any test indicates a problem, find and correct the cause, then recheck the system.
- If all the input tests prove OK, the HandsFreeLink control unit must be faulty; replace it.